post-harvest physiology flower processing floral design ornamental horticulture plant physiology
Post on 18-Jan-2016
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Post-Harvest PhysiologyFlower ProcessingFloral DesignOrnamental HorticulturePlant Physiology
General Background Info: Fresh Flower FoodFlower food contains:a bio-inhibitor like bleach to kill bacteriaa sugar compound for the flower food helps flowers openan acidifier to maintain the pH level
General Background Info:Flower PlumbingXylem & PhloemThese are the tubes that move water and food products up and down the stem of the plant.
General Background Info:Old, Dead FlowersEthyleneThis is the aging hormone gas from plants. It causes flower blooms to open.It can also cause premature aging of flowers.
When Flowers arrive: Processing Flowers1. Debunch Take flowers out of plastic sleeves to release any ethylene gas.Cut open the bundles so the blooms have room to open and breath.2. Cut & Clean StemsMake a fresh cut, about 1 inch from the bottom to provide a new water source for the flower stem.Remove any lower leaves that will be underwater.
Step by Step:
When Flowers arrive: Condition Flowers3. Place in flower solutionBe sure flowers are able to drink the flower solution for at least 1 hour at room temperature.
Step by Step:
After Processing: Storing Flowers4. After drinking for an hour, its time to harden the flowers.Place them in the cooler (36 F)Most common flowers should be stored at 34 38 degrees F.Step by Step:
Special CircumstancesTropical FlowersStore at temperatures between 55 75 degrees FKeep air humid mist with water
Special CircumstancesCurving StemsFor roses and tulips, leave the plastic sleeves on while letting them drink the floral solution, to prevent curving stems.
Special CircumstancesStripping rosesBe careful not to strip the bark because the xylem is right below the surface, rather than in the center of the stem.
Special CircumstancesGerbera Daisies: Use chicken wire to support the flower heads to prevent bent neck.Also, keep them in just enough water, about 2 4 inches. Their stems are spongy and absorb lots of water, which can cause them to wilt prematurely.
Storing FoliageGreens, like leather leaf and other plumosa ferns, can be stored in the cooler without a water bucket.Keep foliage wet, hose down the bunches.Keep foliage wrapped in plastic bags inside the boxes to prevent drying out.
TropismsTropisms is when flower stems curve.We want to prevent this problem when storing flowers.
PhototropismThis is when flowers curve towards a light source.like turning toward a window
TropismsGeotropismThis is when flowers curve up away from gravity. growing upwards, when laying down